设计任务：阅读下面学生信息和语言素材，设计20分钟的英语写作教学方案
教案没有固定格式，但**含下列要点:
·teaching objectives
·teaching contents
·key and difficult points
·major steps and time allocation
·activities and justifications
教学时间: 20分钟
学生概况:某城镇*中学高中三年级第一学期学生，班级人数40人。多数学生已经达到普通高中英语**标准的相应水平，学生课堂参与**性较高。
语言素材:
Writing: A debate speech
When you are going to make a debate speech, it is better to write out your  **** advance.
In this way, you can better organize your thoughts and come up with ideas as  to what you should say.
While you are writing out your speech, you should keep these points in  mind:
·Remember……，your speech must be either for or against the proposition. You  should not try to give both sides of the argument.
·Think of at least three main points. Put these in logical order.
·Think of examples, ***** stories to support each point. Personal stories are  often the most **.
I. Teaching Contents
It is a short introduction to tell students how to write a debate speech.
II. Teaching Objectives
(1) Language Ability
Students can think about the points about how to make a debate speech and  write it out.
(2) Cultural Awareness
Students can have a basic understanding of a debate speech and be interested  in the content.
(3) Thinking Capacity
Students can learn to organize their thoughts about a given topic and express  the thoughts logically.
(4) Learning Ability
Students’writing ability will be improved greatly.